Suspension and Brakes Springs, shocks, coilovers, sways, braces, brakes, etc.

Anyone ever cut 1 coil off of F sport springs?

Thread Tools
 
Search this Thread
 
Old 09-22-10, 08:24 PM
  #1  
ScKcBc
Lexus Test Driver
Thread Starter
iTrader: (2)
 
ScKcBc's Avatar
 
Join Date: Nov 2009
Location: LI, NY
Posts: 981
Likes: 0
Received 0 Likes on 0 Posts
Default Anyone ever cut 1 coil off of F sport springs?

I'm about to pickup F sport springs for the winter before I do KW V3's in the spring. I'm curious to know if anyone has ever cut just 1 coil off in the front? They seem to barely lower the car in the front from the pictures I've seen? What do you guys think, bad idea?
Old 09-22-10, 08:28 PM
  #2  
funnie
Lexus Test Driver
iTrader: (14)
 
funnie's Avatar
 
Join Date: Apr 2009
Location: ca
Posts: 872
Likes: 0
Received 0 Likes on 0 Posts
Default

never been a fan of cutting springs. have you considered changing to a different set of springs?
Old 09-22-10, 08:34 PM
  #3  
quang
Lexus Test Driver
iTrader: (8)
 
quang's Avatar
 
Join Date: Jul 2009
Location: CA
Posts: 1,280
Likes: 0
Received 4 Likes on 3 Posts
Default

+1 ^^^ i think there are other springs give you more drop
Old 09-22-10, 08:46 PM
  #4  
lexusis305
Lead Lap
iTrader: (2)
 
lexusis305's Avatar
 
Join Date: Sep 2010
Location: miami,fl
Posts: 723
Likes: 0
Received 2 Likes on 1 Post
Default

Anyone ever cut 1 coil off of F sport springs?-160.jpgi cut the front and rear no diff. in the ride on my fspot springs one full coil with 275 in rear and 10.5 and 1inch spacer due is f rear brakes
Old 09-22-10, 08:47 PM
  #5  
Kurtz
Lexus Fanatic
iTrader: (1)
 
Kurtz's Avatar
 
Join Date: Aug 2007
Location: NC
Posts: 7,810
Likes: 0
Received 13 Likes on 10 Posts
Default

Originally Posted by RpmSteve
I'm about to pickup F sport springs for the winter before I do KW V3's in the spring. I'm curious to know if anyone has ever cut just 1 coil off in the front? They seem to barely lower the car in the front from the pictures I've seen? What do you guys think, bad idea?
It's a dumb idea to begin with... it's a really dumb idea when the springs are progressive.
Old 09-22-10, 08:54 PM
  #6  
laobo979
Lead Lap
iTrader: (5)
 
laobo979's Avatar
 
Join Date: Mar 2008
Location: Mass
Posts: 3,525
Received 66 Likes on 47 Posts
Default

sorry but in due time the ride will become bouncy this is not a honda
Old 09-22-10, 09:49 PM
  #7  
lexusis305
Lead Lap
iTrader: (2)
 
lexusis305's Avatar
 
Join Date: Sep 2010
Location: miami,fl
Posts: 723
Likes: 0
Received 2 Likes on 1 Post
Default

It ride very nice for now and it looks thats all I need
Old 09-23-10, 02:01 PM
  #8  
ScKcBc
Lexus Test Driver
Thread Starter
iTrader: (2)
 
ScKcBc's Avatar
 
Join Date: Nov 2009
Location: LI, NY
Posts: 981
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by lexusis305
Attachment 186871i cut the front and rear no diff. in the ride on my fspot springs one full coil with 275 in rear and 10.5 and 1inch spacer due is f rear brakes
Can you repeat that? i think you cut 1 full coil in the front and and rear and you said there was no different in the ride?
Old 09-23-10, 04:39 PM
  #9  
509IS350
Lexus Test Driver
iTrader: (5)
 
509IS350's Avatar
 
Join Date: May 2010
Location: WA
Posts: 1,005
Likes: 0
Received 1 Like on 1 Post
Default

Just get h&rs
Old 09-23-10, 06:41 PM
  #10  
lexusis305
Lead Lap
iTrader: (2)
 
lexusis305's Avatar
 
Join Date: Sep 2010
Location: miami,fl
Posts: 723
Likes: 0
Received 2 Likes on 1 Post
Default

Its easy to do and this is my every day driver rides like a champ also it was free . You can hater if you want but it works
Old 09-23-10, 07:16 PM
  #11  
Kurtz
Lexus Fanatic
iTrader: (1)
 
Kurtz's Avatar
 
Join Date: Aug 2007
Location: NC
Posts: 7,810
Likes: 0
Received 13 Likes on 10 Posts
Default

Originally Posted by lexusis305
Its easy to do and this is my every day driver rides like a champ also it was free . You can hater if you want but it works
Your F-sport springs were free?

Better question, do you understand what a progressive rate spring is, and why cutting it is a bad idea?
Old 09-23-10, 07:20 PM
  #12  
lexusis305
Lead Lap
iTrader: (2)
 
lexusis305's Avatar
 
Join Date: Sep 2010
Location: miami,fl
Posts: 723
Likes: 0
Received 2 Likes on 1 Post
Default

I think so am ase master and lexus tech for over 7year have a lil clue lol
Old 09-23-10, 07:52 PM
  #13  
Kurtz
Lexus Fanatic
iTrader: (1)
 
Kurtz's Avatar
 
Join Date: Aug 2007
Location: NC
Posts: 7,810
Likes: 0
Received 13 Likes on 10 Posts
Default

Originally Posted by lexusis305
I think so am ase master and lexus tech for over 7year have a lil clue lol
So you do understand why cutting a progressive rate spring is such a bad idea (over and above cutting a linear one) and did it anyway?

Yikes.


ANYWAY.. to the original poster- either wait until you buy the coilovers and can adjust the height how you like, or buy a set of springs that put the car at the height you want in the first place, rather than trying to Macguyver a set to a different length than it was engineered for.
Old 09-23-10, 07:56 PM
  #14  
JakeBreyck
Pole Position
iTrader: (1)
 
JakeBreyck's Avatar
 
Join Date: Mar 2006
Location: Fl
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Kurtz
So you do understand why cutting a progressive rate spring is such a bad idea (over and above cutting a linear one) and did it anyway?
How about you school us?
Old 09-23-10, 08:34 PM
  #15  
Kurtz
Lexus Fanatic
iTrader: (1)
 
Kurtz's Avatar
 
Join Date: Aug 2007
Location: NC
Posts: 7,810
Likes: 0
Received 13 Likes on 10 Posts
Default

Originally Posted by JakeBreyck
How about you school us?
Progressive springs are designed to have a variable rate, essentially being soft initially, and getting firmer as the spring compresses.

Here's a picture showing a linear spring and a progressive one-
http://www.wildweasel.ca/HowTo/Auto/...ngvseibach.jpg

Notice how the coils change along the progressive spring? Each one is there for a purpose, to give the spring what the engineers who designed it think is the ideal, softer, starting rate and the ideal, firmer, ending rate, and a proper progression along the way.


Now along comes some redneck with a saw (or even worse, a cutting torch) and decides "Aww, hell, it'll be fine if I just whack some of it off! It's not like there's any REASON they made it exactly this length with exactly this many coils, right!"

And speaking of torches... heat the spring too much and you're extra screwed (and possibly walking after a while)... why? the metal in those springs was properly tempered when manufactured... after you heated em way up then randomly left them to cool? Not so much anymore.


Here's a site with a nice explanation of some of the physics of why cut springs are bad in general, and he's only covering a linear spring-

http://craig.backfire.ca/pages/autos/cutting-springs

Things get even wonkier cutting a progressive rate spring, but hopefully that gives you an idea.


Anyway, you guys are driving $30-50 thousand dollar cars...not an 82 CRX... if you want a lower car there's a myriad of choices that accomplish that correctly without being outrageously expensive.

Last edited by Kurtz; 09-23-10 at 09:07 PM.


Quick Reply: Anyone ever cut 1 coil off of F sport springs?



All times are GMT -7. The time now is 03:21 AM.